CN2159642Y - Stepless bright regulating ballast for fluorescent light - Google Patents
Stepless bright regulating ballast for fluorescent light Download PDFInfo
- Publication number
- CN2159642Y CN2159642Y CN 92207225 CN92207225U CN2159642Y CN 2159642 Y CN2159642 Y CN 2159642Y CN 92207225 CN92207225 CN 92207225 CN 92207225 U CN92207225 U CN 92207225U CN 2159642 Y CN2159642 Y CN 2159642Y
- Authority
- CN
- China
- Prior art keywords
- coil
- ballast
- light
- magnetic core
- stepless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a stepless bright regulating ballast for a fluorescent light, which belongs to the field of electronic light regulating ballasting for the fluorescent light. A magnetic core coil, the inductance quantity of which can be continuously changed is connected with a high-frequency oscillation output terminal of the ballast; or a feedback coil of the base electrode of a triode is designed into the magnetic core coil with continuously adjustable inductance quantity. Thus, the size of current flowing through a light tube is changed by regulating the inductance quantity of the coil; thereby, the light can be regulated. The utility model can be used for the stepless light regulation of the fluorescent lights.
Description
The utility model belongs to fluorescent lamp light modulation ballast field.
The more traditional Inductive ballast of electronic ballast for fluorescent lamp has many advantages at aspects such as economize on electricity, build-ups of luminance, but the light modulation of fluorescent lamp, the particularly high-power fluorescent lamp light modulation more than 40 watts are still not convenient, or can not continuous light tuning, or dimming scope is too narrow.The utility model utilizes high-frequency current that the inductance coil inductance value is changed responsive this characteristic, seals in a magnetic core coil at output, changes winding inductance quantity, reaches the light modulation purpose; Also can reach the light modulation purpose by changing transistor base feedback coil inductance value.
The purpose of this utility model just provides the electrodeless light modulation ballast device of a kind of fluorescent lamp,
The signal of the utility model circuit theory as shown in Figure 1.T
1aT
1bT
1cFor pulse transformer is the base stage feedback coil, L
2Be choking-winding, L
3Be dimmer, L
TBe dc coil.
At output L
2After be connected in series the adjustable coil L of a magnetic core again
3, regulate magnetic core and coil relative position, change its inductance value, thereby change the output current size, reach the light modulation purpose.
Among Fig. 1, the transistor base feedback coil also is the magnetic core adjustable coil, changes magnetic core and coil relative position, changes its inductance value, thereby has changed the size of base stage feedback current, reaches the light modulation purpose.
Work as L
3When coil design was fixed coil, externally-applied magnetic field that can handy permanent magnet changed L
3Inductance value, reach the light modulation purpose.
The base stage feedback coil also can be designed to fixed coil, equally with permanent magnet near or the mode left, reach the light modulation purpose thereby change base stage feedback current size.
In base stage feedback fixed coil, add around one-level dc coil L
TRegulate the variable resistor resistance, change dc coil L
TMiddle size of current, thus base stage feedback coil inductance value changed, reach the light modulation purpose.
The utility model compared with prior art has following advantage:
1, can realize stepless dimming, and the dimming scope broad, be example with 40 watts of fluorescent tubes, its adjustable range can reach 5--40 watt.
2, dimming mode is various and convenient.
Among Fig. 1, L
3Coil or base stage feedback coil can the medium wave bar magnet be magnetic core, and it is comparatively convenient to regulate inductance.Among Fig. 1, the added dc coil L of base stage feedback line
TPower supply, available electric capacity is supplied with after with civil power step-down and bridge rectifier; Dc coil is many around several circles, can correspondingly reduce the capacitance of decompression capacitor, minimal power consumption.
Claims (3)
1, the utility model is that a kind of higher-order of oscillation principle of using produces high-frequency and high-voltage to start the luminous ballast of fluorescent lamp, it is characterized in that: it can be that inductance value can be made continually varying coil, i.e. dimmer do relative displacement with coil that this ballast higher-order of oscillation output choke place is connected in series a magnetic core again.
2, dimming ballast according to claim 1 is characterized in that: this dimmer can be designed to the fixed coil that magnetic core and coil are not done relative displacement, and with a permanent magnet gradually near or leave this coil so that winding inductance quantity is done to change continuously.
3, dimming ballast according to claim 1 is characterized in that: can add on the base stage feedback coil around one-level direct current coil again, regulate the size of current of this direct current coil and change this winding inductance quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92207225 CN2159642Y (en) | 1992-04-22 | 1992-04-22 | Stepless bright regulating ballast for fluorescent light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92207225 CN2159642Y (en) | 1992-04-22 | 1992-04-22 | Stepless bright regulating ballast for fluorescent light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2159642Y true CN2159642Y (en) | 1994-03-23 |
Family
ID=33762142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92207225 Expired - Fee Related CN2159642Y (en) | 1992-04-22 | 1992-04-22 | Stepless bright regulating ballast for fluorescent light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2159642Y (en) |
-
1992
- 1992-04-22 CN CN 92207225 patent/CN2159642Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |